MCOTS-C-270-12-HT
Single Output
Half Brick
155-425V
Continuous Input
M
ILITARY
COTS DC/DC C
ONVERTER
155-475V
Transient Input
12V
Output
25A
Output
Full Power Operation: -55°C to +100°C
87% @ 12.5A / 85% @ 25A
Efficiency
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The MilQor series of Mil-COTS DC/DC converters brings
SynQor’s field proven high-efficiency synchronous
rectification technology to the Military/Aerospace
industry. SynQor’s ruggedized encased packaging
Mil-COTS
T
-H
-12 ER 0A
70 ERT @ 4
-2 V
UT
S-C ON
OT C C 2V O
MC C/D N 1
VI
D 70
2
approach ensures survivability in demanding
environments. Compatible with the industry standard
format, these converters operate at a fixed frequency,
and follow conservative component derating guidelines.
They are designed and manufactured to comply with a
wide range of military standards.
Operational Features
Designed and Manufactured in the USA
Optional Operational Features (full feature)
•
•
•
•
High efficiency, 85% at full rated load current
Operating input voltage range: 155-425 V
Fixed frequency switching provides predictable EMI
No minimum load requirement
• Active current share for N+1 and parallel applications
• External Clock Synchronization pin for better EMI
characteristics
• Startup Synchronization pin for more consistent
startup sequence
Mechanical Features
• Industry standard Half-brick pin-out configuration
• Size: 2.486" x 2.386" x 0.512"
(63.1 x 60.6 x 13 mm)
• Total weight: 4.9 oz (139 g)
• Flanged baseplate version available
Protection Features
•
•
•
•
•
Input under-voltage lockout
Output current limit and short circuit protection
Active back bias limit
Output over-voltage protection
Thermal shutdown
Control Features
Screening/Qualification
• On/Off control referenced to input return
• Remote sense for the output voltage
• Vout trim range of +10%--20%
Safety Features
• 4250V, 30 MΩ input-to-output isolation
• Certified 60950-1 2nd Ed, 2007
(see Standards and Qualifications page)
AS9100 and ISO 9001:2000 certified facility
Qualification consistent with MIL-STD-883
Available with S-Grade or M-Grade screening
Pre-cap inspection per IPC-610, Class III
Temperature cycling per MIL-STD-883, Method 1010,
Condition B, 10 cycles
• Burn-In at 100C baseplate temperature
• Final visual inspection per MIL-STD-2008
• Full component traceability
Doc.# 005-0005517 Rev. 1
01/20/10
•
•
•
•
•
Product # MCOTS-C-270-12-HT
Phone 1-888-567-9596
www.synqor.com
Page 1
Technical Specification
BLOCK DIAGRAM
REGULATION STAGE
CURRENT
SENSE
MCOTS-C-270-12-HT
Output:
12V
Current:
25A
ISOLATION STAGE
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POSITIVE
INPUT
T1
T2
T1
T2
POSITIVE
OUTPUT
1
8
3
INPUT
RETURN
4
GATE DRIVERS
ISOLATION BARRIER
OUTPUT
RETURN
GATE CONTROL
UVLO
OVSD
CURRENT
LIMIT
2
ON/OFF
PRIMARY
CONTROL
OPTO-ISOLATION
6
SECONDARY
CONTROL
TRIM
7
+ SENSE
5
DATA COUPLING
−
SENSE
TYPICAL CONNECTION DIAGRAM
V
in(+)
V
out(+)
V
in
External
Input
Filter
Electrolytic
Capacitor
V
sense(+)
Trim
_
R
trim-up
ON/OFF
or
V
sense( )
V
out(
_
)
R
trim-down
C
load
I
load
V
in(
_
)
Product # MCOTS-C-270-12-HT
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005517 Rev. 1
01/20/10
Page 2
Technical Specification
MCOTS-C-270-12-HT ELECTRICAL CHARACTERISTICS
MCOTS-C-270-12-HT
Output:
12V
Current:
25A
Ta = 25 °C, Vin = 270 Vdc unless otherwise noted; full operating temperature range is -55 °C to +100 °C baseplate temperature with appropriate
power derating. Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
Operating
Operating Transient Protection
Isolation Voltage
Input to Output
Input to Base-Plate
Output to Base-Plate
Operating Temperature
-55
Storage Temperature
-65
Voltage at ON/OFF input pin
-2
INPUT CHARACTERISTICS
Operating Input Voltage Range
155
270
Input Under-Voltage Lockout
Turn-On Voltage Threshold
147.0
150.0
Turn-Off Voltage Threshold
137
140
Lockout Voltage Hysteresis
10.0
Recommended External Input Capacitance
10
Input Filter Component Values (L\C)
2.8\0.408
Maximum Input Current
No-Load Input Current
50
Disabled Input Current
7.2
Response to Input Transient
520
Input Terminal Ripple Current
250
Recommended Input Fuse
OUTPUT CHARACTERISTICS
Output Voltage Set Point
11.88
12
Output Voltage Regulation
Over Line
±0.1
Over Load
±0.1
Over Temperature
-180
Total Output Voltage Range
11.7
Output Voltage Ripple and Noise
Peak-to-Peak
0
240
RMS
55
Operating Output Current Range
0
Output DC Current-Limit Inception
27.5
31
Output DC Current-Limit Shutdown Voltage
7.2
Back-Drive Current Limit while Enabled
TBD
Back-Drive Current Limit while Disabled
TBD
Maximum Output Capacitance
Output Voltage during Load Current Transient
Step Change in Output Current (0.1 A/µs)
500
Settling Time
600
Output Voltage Trim Range
-20
Output Voltage Remote Sense Range
Output Over-Voltage Protection
14.04
14.64
EFFICIENCY
100% Load
85
50% Load
87
Note 1: Output is terminated with 1 µF ceramic and 15 µF low-ESR tantalum
noise, consult SynQor applications support (e-mail: mqnbofae@synqor.com)
Note 2: Trim-up range is limited below 10% at low line and full load.
Parameter
Min.
Typ.
Max.
600
425
475
Units
V
V
V
Notes & Conditions
Continuous
Continuous
100ms transient, square wave
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4250
4250
4250
100
135
18
425
V dc
V dc
V dc
°C
°C
V
V
Baseplate temperature
475V transient for 100m s
153.0
143
2.8
4
TBD
V
V
V
µF
µH\µF
A
mA
mA
mV
mA
A
V
Typical ESR 0.1-0.2 Ω
Internal values; see Figure E
Vin min; trim up; in current limit
RMS
Fast acting external fuse recommended
12.12
±0.3
±0.3
180
12.3
0
0
25
34
%
%
mV
V
4000
mV
mV
A
A
V
A
mA
µF
mV
µs
%
%
V
Over sample, line, load, temperature & life
20 MHz bandwidth; see Note 1
Full load
Full load
Subject to thermal derating
Output voltage 10% Low
Negative current drawn from output
Negative current drawn from output
Vout nominal at full load (resistive load)
50% to 75% to 50% Iout max
To within 1% Vout nom
Across Pins 8&4; see Note 2
Across Pins 8&4
Over full temp range
10
10
15.24
%
See Figure 1 for efficiency curve
%
See Figure 1 for efficiency curve
capacitors. For applications requiring reduced output voltage ripple and
Product # MCOTS-C-270-12-HT
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005517 Rev. 1
01/20/10
Page 3
Technical Specification
MCOTS-C-270-12-HT ELECTRICAL CHARACTERISTICS
MCOTS-C-270-12-HT
Output:
12V
Current:
25A
Ta = 25 °C, Vin = 270 Vdc unless otherwise noted; full operating temperature range is -55 °C to +100 °C baseplate temperature with appropriate
power derating. Specifications subject to change without notice.
DYNAMIC CHARACTERISTICS
Turn-On Transient
Turn-On Time
39
Start-Up Inhibit Time
180
200
220
Output Voltage Overshoot
0
ISOLATION CHARACTERISTICS
Isolation Voltage (dielectric strength)
4250
Isolation Resistance
100
Isolation Capacitance (input to output)
N/A
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Semiconductor Junction Temperature
125
Board Temperature
125
Transformer Temperature
125
Maximum Baseplate Temperature, Tb
100
FEATURE CHARACTERISTICS
Switching Frequency
510
550
590
ON/OFF Control
Off-State Voltage
2.4
18
On-State Voltage
-2
0.8
ON/OFF Control
Pull-Up Voltage
5
Pull-Up Resistance
68.1
Over-Temperature Shutdown OTP Trip Point
125
Over-Temperature Shutdown Restart Hysteresis
10
RELIABILITY CHARACTERISTICS
Calculated MTBF (Telcordia) TR-NWT-000332
TBD
Calculated MTBF (MIL-217) MIL-HDBK-217F
TBD
Field Demonstrated MTBF
TBD
Note 1: Higher values of isolation capacitance can be added external to the module.
Parameter
Min.
Typ.
Max.
Units
ms
ms
%
Notes & Conditions
Full load, Vout=90% nom.
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Maximum Output Capacitance
V
MΩ
pF
°C
°C
°C
°C
See Absolute Maximum Ratings
See Note 1
Package rated to 150 °C
UL rated max operating temp 130 °C
kHz
V
V
For both input and isolation stage
V
kΩ
°C
°C
Application notes Figures A & B
Average PCB Temperature
10
6
Hrs.
10
6
Hrs.
10
6
Hrs.
80% load, 200LFM, 40 °C Ta
80% load, 200LFM, 40 °C Ta
STANDARDS COMPLIANCE
Parameter
STANDARDS COMPLIANCE
Pending
UL 60950-1 2nd Ed, 2007
CAN/CSA-C22.2 No. 60950-1:2007
EN60950-1 Ed 2.0
CE Marked
2006/95/EC Low Voltage Directive
IEC 61000-4-2
ESD test, 8 kV - NP, 15 kV air - NP (Normal Performance)
Note: An external input fuse must always be used to meet these safety requirements. Contact SynQor for official safety certificates on new releases or
download from the SynQor website.
Notes & Conditions
Product # MCOTS-C-270-12-HT
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005517 Rev. 1
01/20/10
Page 4
Technical Specification
Data Pending
MCOTS-C-270-12-HT
Output:
12V
Current:
25A
Data Pending
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Figure 1:
Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25
°
C.
Figure 2:
Efficiency at nominal output voltage and 60% rated power vs.
case temperature for minimum, nominal, and maximum input voltage.
Data Pending
Data Pending
Figure 3:
Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at T
CASE
=25
°
C.
Figure 4:
Power dissipation at nominal output voltage and 60% rated
power vs. case temperature for minimum, nominal, and maximum input
voltage.
Data Pending
Data Pending
Data Pending
Figure 6:
Output voltage vs. load current showing typical current limit
curves. See Current Limit section in the Application Notes.
Product # MCOTS-C-270-12-HT
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005517 Rev. 1
01/20/10
Page 5
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